I never heard of this nut Allergy before! I am allergic to so many things, but but even I was not aware that nut could be an allergen.
The most common allergens are
Cobwebs
Old and unused Books/bookshelves
Cotton from unused quilts/pillows and old Linen
eggplant
prawns/lobsters
pollen during the dry winter months.
and lots of other substances